
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>欢迎来到登录页面</title>
    <script>
        function notnull() {
            if
        }
        
    </script>
</head>

<body>
<p></p>
<hr>
<p></p>
<center>
    <p><h2><b>登    录</b></h2></p>
    <hr>
    <form action="/DOM/Login" onsubmit="return notnull()" method="get">
        用户名 <input type="text" name="user_name"><br/>
        密码  <input type="password" name="pass_word"><br/>
        <input  type="submit" name value="Login"><br/>
    </form>

</center>
</body>
</html>